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MathGroup Archive 2013

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Image[] needs the option ColorFunction, any good workaround?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg131497] Image[] needs the option ColorFunction, any good workaround?
  • From: sibir <martin.rommel at gmail.com>
  • Date: Sat, 10 Aug 2013 04:39:34 -0400 (EDT)
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ArrayPlot and also Image3D have an option ColorFunction. For Image there is no such option, for scalar data "GrayScale" is all there is.

Now one can ImageApply Hue like

ImageApply[List @@ ToColor[Hue[#], RGBColor]&, Image[data]]

but how to use other Gradient Color Schemes like "Rainbow" or "TemperatureMap"?

I am working with large dataset, so ArrayPlot is not an option (too slow and memory inefficient).




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